WO2005097955A1 - グリース組成物およびグリース封入軸受 - Google Patents
グリース組成物およびグリース封入軸受 Download PDFInfo
- Publication number
- WO2005097955A1 WO2005097955A1 PCT/JP2005/005478 JP2005005478W WO2005097955A1 WO 2005097955 A1 WO2005097955 A1 WO 2005097955A1 JP 2005005478 W JP2005005478 W JP 2005005478W WO 2005097955 A1 WO2005097955 A1 WO 2005097955A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- grease
- grease composition
- bearing
- base oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/02—Mixtures of base-materials and thickeners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6607—Retaining the grease in or near the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6633—Grease properties or compositions, e.g. rheological properties
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/2805—Esters used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/006—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions used as thickening agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/06—Perfluorinated compounds
- C10M2211/063—Perfluorinated compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/06—Perfluorinated compounds
- C10M2211/066—Perfluorinated compounds used as thickening agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/011—Cloud point
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
Definitions
- the present invention relates to a grease composition encapsulated in a bearing incorporated in various industrial machines, vehicles, and the like, and particularly to a super-low-temperature force that generates abnormal noise during cold operation.
- the present invention relates to a grease composition suitable for a bearing used in the present invention.
- This grease composition is obtained by kneading a base oil and a thickener, and the base oil is a synthetic oil such as a mineral oil, an ester oil, a silicone oil, an ether oil, a fluoro oil, etc.
- Metal soap rare compounds such as lithium soap and fluorine resin are generally used.
- self-excited vibration occurs in the rolling elements. It is considered that the self-excited vibration causes the pulley system to resonate, causing the outer ring to vibrate (translate) in the axial direction, resulting in generation of abnormal noise during cold weather.
- a comb tooth having at least eight ester groups on one side of eight or more carbon atoms constituting a chain molecule of synthetic hydrocarbon oil and oil.
- a grease is known in which a urea-based compound is blended as a thickening agent with a base oil consisting of a mixed oil with an ester-based synthetic oil arranged in a matrix, and a dithiophosphate is added as an extreme pressure agent (Patent Reference 1).
- An alicyclic diurea compound is added as a thickening agent to a base oil consisting of a mixed oil of a poly- ⁇ -olefin (hereinafter abbreviated as ⁇ ) and an ester oil, and zinc dithiocarbonate is used as an additive.
- a base oil consisting of a mixed oil of a poly- ⁇ -olefin (hereinafter abbreviated as ⁇ ) and an ester oil, and zinc dithiocarbonate is used as an additive.
- ⁇ poly- ⁇ -olefin
- ⁇ poly- ⁇ -olefin
- zinc dithiocarbonate zinc dithiocarbonate
- Patent Document 1 JP-A-9-208982
- Patent Document 2 Japanese Patent Application Laid-Open No. H11-270566
- An object of the present invention is to provide a grease composition and a grease-enclosed bearing that can reliably prevent generation of abnormal noise during cold weather.
- the grease composition of the present invention is a grease composition comprising a base oil and a thickener,
- the base oil has a pour point of 50 ° C or less and a kinematic viscosity at 40 ° C of 15 mmVs or more, and the thickening agent is at least one selected from rare compounds and fluororesins. It is characterized by being.
- the mixing degree of the grease composition is 250-350.
- the base oil is characterized in that it is at least one oil selected from PAO oil and perfluoroether oil power.
- the pour point is a value measured by the method specified in JIS K2269
- the degree of mixing is the degree of mixing 60 times measured by the method specified in JIS K2220. Value.
- the grease-enclosed bearing of the present invention is characterized in that an inner ring and an outer ring, a rolling element interposed between the inner ring and the outer ring, and a grease composition sealed around the rolling element. Further, the grease-enclosed bearing is characterized in that it is a bearing used for electric components for automobiles.
- the grease composition of the present invention is a grease composition comprising a base oil and a thickening agent, wherein the base oil has a pour point of 50 ° C or less and a pour point at 40 ° C.
- the kinematic viscosity is 15 mmVs or more
- the thickener is at least one selected from rare compounds and fluororesins, so it exhibits good lubricity over a wide temperature range from low to high temperatures, Immediately after starting, the generation of abnormal noise during cold can be prevented, and the force to maintain excellent high-temperature durability over a long period of time can be used to extend the life of the bearing as much as possible.
- Grease composition is a grease composition comprising a base oil and a thickening agent, wherein the base oil has a pour point of 50 ° C or less and a pour point at 40 ° C.
- the kinematic viscosity is 15 mmVs or more
- the thickener is at least one selected from rare compounds and fluororesin
- the degree of mixing of the above grease yarn is 250-350, it exhibits wide lubricity from low to high temperature, exhibits good lubrication in the temperature range, and generates abnormal noise during cold immediately after starting at low temperature. Can be prevented.
- the above base oil is at least one oil selected from PAO oil and perfluoroether oil, so it reliably prevents abnormal noise during cold weather while maintaining lubrication performance at high temperatures. can do.
- the grease-enclosed bearing of the present invention includes an inner ring and an outer ring, and an interposed space between the inner ring and the outer ring. And a bearing in which the above-mentioned grease thread is sealed around the rolling element, so that it exhibits good lubricating properties over a wide temperature range from low temperature to high temperature, and can be used immediately after starting at low temperature. Later, generation of abnormal noise during cold can be prevented.
- the bearing can maintain excellent high-temperature durability for a long time, and the life of the bearing can be extended as much as possible.
- the grease-enclosed bearing is a bearing used for automotive electrical accessories, it is possible to reliably prevent the generation of abnormal cold noise when the vehicle is cold, while maintaining the lubricating performance at high temperatures.
- FIG. 1 is a cross-sectional view of a rolling bearing.
- a grease composition containing a base oil having a pour point of 50 ° C or less and a kinematic viscosity at 40 ° C of 15 mmVs or more has a certain high-temperature durability and a low It was a component that improved sound prevention performance. It is considered that the addition of the base oil prevented the increase in the viscosity of the grease composition at the time of cold and suppressed the occurrence of oil film unevenness on the bearing raceway surface, thereby increasing the effect of preventing abnormal noise at cold time.
- the present invention is based on such findings.
- the base oil that can be used in the present invention has a pour point of 50 ° C. or less and a kinematic viscosity at 40 ° C. of 15 mmVs or more. These mixed oils can be used.
- a pour point depressant such as polymethacrylate to lower the pour point of the base oil to 50 ° C or less. May be.
- the kinematic viscosity of the base oil at 40 ° C must be 15 mmVs or more, and the kinematic viscosity at 40 ° C must be 30 mmVs or more in order not to deteriorate the lubrication performance and lubrication life at high temperature and high speed. Those having a viscosity are preferred.
- Mineral oils include paraffinic mineral oils and naphthenic mineral oils, and synthetic oils include synthetic hydrocarbon oils, ether oils, ester oils, and fluorine oils.
- PAO oil and the like as synthetic hydrocarbon oils dialkyl diphenyl ether oil, alkyl triphenyl ether oil and alkyl tetraphenyl ether oil as ether oils, and diester oil, polyol ester oil and ester oil as ester oils These include complex ester oils and aromatic esters.
- perfluoropolyether oil can be mentioned as the fluorine oil.
- synthetic hydrocarbon oils that preferably contain synthetic hydrocarbon oils, alkyl diphenyl ether oils, ester oils, and fluorine oils in consideration of lubrication performance at high temperatures and high speeds and lubrication life. It is particularly preferred that at least one oil selected from the group consisting of PAO oil and perfluoroether oil of fluoro oil is contained.
- the above-mentioned PAO oil is usually a mixture of ⁇ -olefin or an isomerized ⁇ -olefin oligomer or polymer.
- ⁇ -olefins include 1 otene, 1 nonene, 1-decene, 1-dodecene, 1 tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1 nonadecene, Examples thereof include 1 eicosene, 1-docosene, and 1-tetracosene, and a mixture thereof is usually used.
- the above perfluoropolyether oil can be used as long as the hydrogen atom of the aliphatic hydrocarbon polyether is replaced with a fluorine atom.
- a perfluoropolyether oil a perfluoromouth polyether having a side chain represented by the following chemical formulas 1 and 2 and a linear perfluoropolyether represented by the chemical formulas 3 to 5 And polypolyether. These can be used alone or in combination.
- m and n are integers.
- Yidani 1 Commercial products of Yidani 1 include Fomblin Y (trade name of Montedison), and commercial products of Yidani 2 include Kryttustus (trade name of DuPont) and Valierta J Oil (trade name of Cleaver).
- Fomblin Z trade name of Montedison
- Fomblin M trade name of Montedison Co.
- the commercial product of Chemical Formula 5 can be exemplified by Demnum (trade name of Daikin Co., Ltd.).
- the thickener that can be used in the present invention is a urea compound, a fluorinated resin powder or a mixture thereof.
- the rare compound is used as a thickening agent in the above synthetic oil and the fluororesin powder is used in the above perfluoropolyether oil.
- the urea compound is represented by the following formula 6, which is preferred by diurea having two urea bonds in the molecule.
- R and R are aromatic hydrocarbon groups having 612 carbon atoms and aliphatic carbon groups having 6 to 20 carbon atoms.
- R represents an aromatic hydrocarbon group having 6 to 12 carbon atoms.
- the urea compound is obtained by reacting an isocyanate group equivalent amine compound with a diisocyanate conjugate. Polyurea and the like can also be used in addition to diurea.
- fluororesin which can be used to increase the perfluoropolyether oil
- a powder having a high affinity with the perfluoropolyether oil and having high temperature stability can be used.
- fluororesins include polytetrafluoroethylene (PTFE), tetrafluoroethylene perfluoroalkylbutyl ether copolymer (PFA), and tetrafluoroethylene-hexafluoropropylene.
- PTFE polytetrafluoroethylene
- PFA tetrafluoroethylene perfluoroalkylbutyl ether copolymer
- FEP perfluorinated fluororesins
- polytetrafluoroethylene is particularly preferred because of its excellent high-temperature stability.
- the compounding ratio of the thickener is preferably 5 to 50 parts by weight based on 100 parts by weight of the total amount of the base oil and the thickener. If the amount is less than 5 parts by weight, it becomes a liquid having a low viscosity and easily leaks, and it is difficult to seal the bearing. If the amount exceeds 50 parts by weight, the degree of solidification becomes 100 or less, and the grease for sealing the bearing is not practical.
- the degree of miscibility of the grease composition that can be used in the present invention is preferably in the range of 250 to 350. If it is less than 250, the lubricating performance at low temperatures becomes poor, and if it exceeds 350, the grease composition tends to leak, which is not preferable.
- the grease composition of the present invention contains the above-described base oil and thickening agent as essential components, and further includes an extreme pressure agent, an antioxidant, a rust preventive, a metal deactivator, Conventional additives for dusty oils and the like can be further added. These are shown below.
- the organometallic compounds include organic molybdenum dihalides such as dithiol molybdenum rubinate and molybdenum dithiophosphate, organic zinc ligated compounds such as zinc dithiol rubinate, zinc dithiophosphate, and zinc phenate; Organic antimony compounds such as antimony rubamate and antimony dithiophosphate; organic selenium compounds such as dithioforce selenium rubinate; organic bismuth compounds such as bismuth naphthenate and bismuth dithiocarnomate; iron dithioformate and iron octylate , Organic copper compounds such as copper dithiolbamate, copper naphthenate, lead naphthenate, dithiolamine Organic tin compounds such as acid tin, organic tin sulfides such as tin maleate and dibutyltin sulfide, or organic metal
- a sulfide such as dibenzyl disulfide or a polysulfide compound, a sulfurized fat or oil, an ashless compound such as a rubamic acid compound, a thiourea compound, or a thiocarbonate.
- Phosphoric acid extreme pressure agents include phosphoric acid esters such as trioctyl phosphate and tricresyl phosphate, and phosphoric acid ester compounds such as acidic phosphoric acid ester, phosphite ester and acidic phosphite ester. can do.
- halogen-based extreme pressure agents such as chlorinated paraffin, or boron compounds such as disulfide molybdenum, tungsten disulfide, graphite, polytetrafluoroethylene, disulfide antimony, boron nitride, etc.
- Solid lubricants can be used.
- dithiol rubamic acid compounds and dithiophosphoric acid compounds can be suitably used.
- an antioxidant an antioxidant, an ozone deterioration inhibitor and an antioxidant which are added to rubber, plastic, lubricating oil and the like can be appropriately selected and used.
- the following compounds can be used. That is, fu-ru 1 naphthylamine, hu-ru 2-naphthylamine, diphenyl-p-phenylenediamine, dipyridylamine, phenothiazine, N-methylphenothiazine, N-ethylfnothiazine, 3,7-dioctylfunothiazine, p, p, 1 Amine compounds such as dioctyldiphenylamine, N, N, diisopropylp-phenylenediamine, N, N, di-sec-butyl-p-dienediamine and the like can be used.
- a phenol-based anti-irritating agent can also be used.
- phenol-based antioxidants include 2,6-di-t-dibutylphenol, n-octadecyl-3- (3 ', 5'-di-tert-butyl-4-hydroxyphenyl) propionate, tetrakis- (methylene) 3- (3 ', 5'-di-tert-butyl-4-hydroxyphenyl) propionate) methane, 2,2'-methylenebis (4-methyl-6-t-butylphenol), 4,4'butylidenebis (3- Methyl-6-t-butylphenol) and the like.
- the following compounds can be used. That is, organic sulfo Ammonic acid salts of alkali acids, alkali metals such as norium, zinc, calcium, and magnesium, organic sulfonates of alkaline earth metals, organic carboxylates, phenates, phosphonates, alkyl or alkenyl succinates, etc.
- metal deactivator for example, triazole-based compounds such as benzotriazole and tolyltriazole can be used.
- the oily agent for example, the following compounds can be used. That is, fatty acids such as oleic acid and stearic acid, fatty acid alcohols such as oleyl alcohol, fatty acid esters such as polyoxyethylene stearate ester and polyglyceryl oleate, phosphoric acid, tricresyl phosphate, lauryl ester and polyoxyester. Phosphate esters such as ethylene oleyl ether phosphoric acid and the like can be used.
- FIG. 1 shows an example of the grease-enclosed bearing according to the present invention.
- Figure 1 is a sectional view of a deep groove ball bearing.
- an inner ring 2 having an inner ring rolling surface 2a on the outer peripheral surface and an outer ring 3 having an outer ring rolling surface 3a on the inner peripheral surface are arranged concentrically, and the inner ring rolling surface 2a and the outer ring rolling surface 3a are provided.
- a plurality of rolling elements 4 are arranged between the two.
- the grease composition 7 is sealed at least around the rolling elements 4.
- Example 1 One Example 13
- a base oil and a thickening agent were blended at the ratios shown in Table 1 to obtain a grease composition.
- MDI is 4,4'-diphenylmethane diisocyanate.
- An abnormal cold noise measurement and a high temperature grease life test were performed on the obtained grease composition. The test method and test conditions are shown below.
- the grease composition of the present invention exerts good lubricity over a wide temperature range from low to high temperatures, and can prevent generation of abnormal noise at cold immediately after starting at low temperatures.
- the bearing in which the gas composition is sealed can be suitably used as a bearing for a vehicle such as an automobile in cold weather.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Rolling Contact Bearings (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05721455A EP1739157A4 (en) | 2004-04-02 | 2005-03-25 | GREASE COMPOSITION AND BEARING COMPLETE WITH GREASE AND GREASE FILLED BEARING |
| US11/547,427 US8048835B2 (en) | 2004-04-02 | 2005-03-25 | Grease composition and grease-enclosed bearing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004109558A JP4832724B2 (ja) | 2004-04-02 | 2004-04-02 | グリース組成物およびグリース封入軸受 |
| JP2004-109558 | 2004-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005097955A1 true WO2005097955A1 (ja) | 2005-10-20 |
Family
ID=35125059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/005478 Ceased WO2005097955A1 (ja) | 2004-04-02 | 2005-03-25 | グリース組成物およびグリース封入軸受 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8048835B2 (ja) |
| EP (1) | EP1739157A4 (ja) |
| JP (1) | JP4832724B2 (ja) |
| CN (1) | CN1938409A (ja) |
| WO (1) | WO2005097955A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008239704A (ja) * | 2007-03-26 | 2008-10-09 | Japan Energy Corp | 車両用軸受潤滑油 |
| WO2017094602A1 (ja) * | 2015-12-04 | 2017-06-08 | Nokクリューバー株式会社 | 潤滑剤組成物 |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5101950B2 (ja) * | 2007-08-20 | 2012-12-19 | Ntn株式会社 | 玉軸受 |
| JP5310732B2 (ja) * | 2008-10-17 | 2013-10-09 | Nokクリューバー株式会社 | 潤滑グリース組成物およびその製造法 |
| JP5244537B2 (ja) * | 2008-10-17 | 2013-07-24 | Ntn株式会社 | 車輪用軸受装置 |
| JP5664890B2 (ja) * | 2009-10-15 | 2015-02-04 | 協同油脂株式会社 | 風力発電機軸受用グリース組成物 |
| JP5766425B2 (ja) * | 2010-10-20 | 2015-08-19 | 協同油脂株式会社 | グリース組成物 |
| US9581943B2 (en) * | 2014-04-30 | 2017-02-28 | Canon Kabushiki Kaisha | Heat fixing apparatus and grease composition for the heat fixing apparatus |
| CN104119985A (zh) * | 2014-07-01 | 2014-10-29 | 上海亚杜润滑材料股份有限公司 | 一种新型机械润滑剂 |
| JP6753699B2 (ja) * | 2016-05-27 | 2020-09-09 | ミネベアミツミ株式会社 | 転がり軸受 |
| CN110317667A (zh) * | 2019-07-15 | 2019-10-11 | 浙江摩路新材料有限公司 | 一种高温长寿命轴承润滑脂及其制备方法 |
| JP2022155415A (ja) * | 2021-03-30 | 2022-10-13 | Ntn株式会社 | 密封型転がり軸受 |
| CN117222727A (zh) * | 2021-04-20 | 2023-12-12 | 出光兴产株式会社 | 润滑油组合物 |
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| JP2008239704A (ja) * | 2007-03-26 | 2008-10-09 | Japan Energy Corp | 車両用軸受潤滑油 |
| WO2017094602A1 (ja) * | 2015-12-04 | 2017-06-08 | Nokクリューバー株式会社 | 潤滑剤組成物 |
| JP6155414B1 (ja) * | 2015-12-04 | 2017-06-28 | Nokクリューバー株式会社 | 潤滑剤組成物 |
| US10633608B2 (en) | 2015-12-04 | 2020-04-28 | Nok Klueber Co., Ltd. | Lubricant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005290279A (ja) | 2005-10-20 |
| US20070287646A1 (en) | 2007-12-13 |
| CN1938409A (zh) | 2007-03-28 |
| US8048835B2 (en) | 2011-11-01 |
| EP1739157A1 (en) | 2007-01-03 |
| EP1739157A4 (en) | 2010-02-10 |
| JP4832724B2 (ja) | 2011-12-07 |
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